PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -In the deepest level of sleep, stage IV sleep, the predominant EEG activity consists of low frequency (1–4 Hz), high-amplitude fluctuations called delta waves, the characteristic slow waves for which this phase of sleep is named. The entire sequence from drowsiness to deep stage IV sleep usually takes about an hour.

Detailed explanation-2: -Delta waves are the slowest recorded brain waves in human beings. They are found most often in infants and young children, and are associated with the deepest levels of relaxation and restorative, healing sleep. Delta is prominently seen in brain injuries, learning problems, inability to think, and severe ADHD.

Detailed explanation-3: -The brain activity during this period has an identifiable pattern of what are known as delta waves. For this reason, stage 3 may also be called delta sleep or slow-wave sleep (SWS). Experts believe that this stage is critical to restorative sleep, allowing for bodily recovery and growth.

Detailed explanation-4: -5 During this stage, the brain begins to produce the slow and deep waves of delta sleep. People are far less responsive and less aware of their external environment at this point. Delta wave sleep is often thought of as a transitional point between light and deep sleep.

Detailed explanation-5: -Alpha brain waves are the main brain wave pattern that develops when a person becomes drowsy. View Source and transitions from wakefulness to sleep. They continue during the early phase of sleep until they are replaced by slower theta waves.